SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0ca1cbc8baabd0420f8b2e16e928a076791dcf7cfd63502ef19af2458be33327' 
  AND token = 'JNoyJZW1iORK5JCvciVvD4jCxH42NT+WdahjqSTcDJg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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