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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1141760634e871b25fbac1b2310d066a88ba37d024bae0809a3eb95e590d0f83' 
  AND token = 'wO69Up1JjXvHL73fHOcdc3om9ou+5tEik1B1cy09gI8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}