Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '159756271c99384485d554efda07bb1d95bb7b3bc110557097d38bf974a04878' 
  AND token = 'o91hPVFYE0csPNTLkjmZksZxtK4S0WG1PDVyd+VjQlo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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