SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0862f6f166f114304662c235fc34ac5ec0d31b2777e565d25c9069b2b842b515' 
  AND token = 'MtG/ZiRhgu1J03JZ2URluABX0p4jmnxyisCv8Hzi/J8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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