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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '45c7f1d96e4e6faa5bcbdef209641af066a15cc19a72b75c6c5ae6fbfaa858ca' 
  AND token = '/t47d4X6wUpKwDOS5q2sMr69fJmVV6CcBDOE6ifTOC8=' 
  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"
    }
  }
}