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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '030c20e73c48d51f2e73e54f52dc2e71c0ec1d2f7ec26c42319a58750c463c45' 
  AND token = 'AFIOA43oRqsN1U8NP1cEDmHYQleGi1s83V5vdYQtkbI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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