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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd77545b80574b634134ece8090419d8666870c6a612767ed038e007fd1a331a5' 
  AND token = 'oN9A928dBeGMVyDl0NZ8KnrMj70Q7DUWxF2xeivqEV4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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