Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9c0796367e611f886a75c44ccb3f25ef0a11581a15f38574ab23eff4f9e43bdb' 
  AND token = 'MC7YiGPMc4jp3g6oAhLLdTQ8DZ847EhK67j+FG0KfYQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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