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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9056fd32a6aa679f2edb11c0136719a0e2cebb6822fb0dcb523af984e48e8e71' 
  AND token = 'YK1UEGJs86CO2kN3HaNfIE/Z2+GFvEi2icWyo5SVCh8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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