SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0222acf150a76b1471ae925c15326541f235a986bad67d5206768b7c610547fb' 
  AND token = 'U48jGQXH0/ZnG+A0+Th0sl0cK+yzPd5urTz1ddw/OTE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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