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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f0e1a7a23859841b926f7d3311061d73109cd0c4b4855d9ba8207d8fff662dce' 
  AND token = 'iF1diR46EARYaRD9B7gOBk1Lsx5dZkZjQ2QYrEMiXD0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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