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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '261b0ab48bfc3ab8e8dc5634e8158f2089c9237c2c440444b3e303060e82d77c' 
  AND token = 'kAnwTKwUpH5H5kU7caqod/IAvxUIT8KzzbmEiT7hrsM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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