Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c596e02558f41cf41ad64b502118a398341278f68bbbc925918017d94223217a' 
  AND token = 'Psbh7AaJbQK7lEmVkzo5BfIcXHSuxWab/DFxcKU4hbE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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