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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e380143f50b43d7b4846895a5f87917abc2f12754fbfaca2148ed622368e798a' 
  AND token = 'TO9gqqghSEXOuYGw5gA1TYH2hn5Xb66d/Jyr/keE6sc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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