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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5ace95f0ac5ce0b4125d5e00b0f1244e04da2714541333f520b3c26fa54b0ee9' 
  AND token = 'a0Voz9Z2KEgim0k6X0UCKaO51iEpsfWD/qF/W1vWwAo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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