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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ede0e0a108aec5b18fea93b10b390172ed3cb6e1b898c3261c2dae5a00cd23f9' 
  AND token = 'HFidLWVTclZGVUsC6azHVChk2/pl5KurcxWZqU7NoP8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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