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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8e042b81659521b2dbe43e532b6ececd2d0da6f769b6e0afe325ff555f2ed06e' 
  AND token = 'Xk6VcmyF/MRGKFEGQY+980YIm622tkV4L08TX9bP7U0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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