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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce4e98f8e5f7a7ae23dacc308841a7197410928dcc50cf7d1c501499d5ff1923' 
  AND token = 'iC4IoYeBr/iN8NXX3U5/RIFpraqca7hxVprrdNPi6js=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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