Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a5c8ec13db08ac59658c8d0ccd26c838e1344218cef3b0250438cd72427c4090' 
  AND token = 'C6EZf9X2OTqRHlM1yB12q/ToFd/9tZwDt0b1Jpea4EQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00086

JSON explain

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