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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '498366704caa17ee50aaef18136c04d09dde94e80c475bebb59f976521fc283c' 
  AND token = 'jA0OWpgKo2s7WVku1CRgdWxIp80mqfAY2VceOD4N4FE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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