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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2fffa84a0d2ac03df3cac0fb338b9d9cf9e53106fb1bbb4a53f6046eea71b11f' 
  AND token = '9Gfn+lyE2qul/Wt6g8E8E+jTF8yaApXDAGJ3bSjLhy0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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