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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd8c9e3606770b9ea81ee2308b9a23024395d7bb32592a032b179453aff9f1bff' 
  AND token = 'Uq0QPHaffu3Cz6PoJ2gSr9A+W3ZTujD9qnz8tlHQAzs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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