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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4f06201ca3b1aefe30227bebcc87172428046983ba099e0ab1adce6d5351e7b5' 
  AND token = 'FL4FY3E0f49ozorObV02Ufkn/2h+qME9/Ps1fA3Sh2c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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