Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '701998f4c13095655ba0221ddf8ff32c1548d7987b61dcbcfa5bbe0e09a60aa8' 
  AND token = 'cft981f1O7cYMOxq+X+3DfCs2k+YOO3+4c8Iip4lokY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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