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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3d29ec173ce5529974afe83264b74575c1b8c367dce514ab8aa34251ce053e0d' 
  AND token = 'srEPmH8KXGxrohxAK1z5F2NC7R7HNHUFlAHFVdSLqIQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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