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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'dcd56ebecdedf5000eab990a1bbb946f11a9cf0a0748164cfdc35ef139d399b9' 
  AND token = '3Zts9RO48ocwqm6OZsvURG6xfK6SgluyRcnvoqzKGHQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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