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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09bfc90f019dd324af02a7d4f24fec78d60107687e4a853d3abce9521fa85a4f' 
  AND token = 'AAUqVA+fLEItSczk3hhrxgkiAsFIr/cXzWANS2n1rAY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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