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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f7dc6d8bd6a7e243c1784c673584e6b65df7e0c139bfc73a03a6ac2d27d5800' 
  AND token = 'fuIkZ5eBfMkV3FQkrnA3uq/7qLX0Y8sT4ZbQFPv2enc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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