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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ea72245ed82dd52525281c33c1ac87fb680aa8c5d0e2eee52ebb57b2c63cf4fd' 
  AND token = '/hDdOgy2Gm2/YyvcVy+n1z9No7gFZF/8UxPXE9TBI88=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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