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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1baea1d07dccb1e6f412a44ff2cfd75206e5c297730c5c241c8e2675e7099522' 
  AND token = 'aRlgYKlduG4Yfjou9MNei073gVArwxd9Ks9FC91ensk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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