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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09013a0b4046b6a6a04750a8c526fef72023af7076c430e0ab1707e899054112' 
  AND token = 'EKxhu9S17p0dcRfFsY4s+dMtCkJPB0UqpzCaU6Coge8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}