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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'f3da756adb41e907b3f086f03373c8223d794c6c0ff25bb994ab28c5e8122180' 
  AND token = 'S433N9dhqb4bZUQTpDx974xASglV/sfe5ifLhITAz8o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00139

JSON explain

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