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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32947ae8c3f3afb11f09c20e4f4b52c29e0984abf923aeedcf31bb804c069bdb' 
  AND token = 'LtdZ94PBl2JSQ9u4TimdLXaXQw9/PUPeKvAF2wzox7U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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