Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0035fe3e143618f994e02ce340f4b73834491a7d5bc64e6e4376841e201500d6' 
  AND token = 'u01T6q3aFbi6dz+iHtW9cq7cAu20Ge2oy2hrrvJcPI0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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