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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c1ec906ecec73ec383984bfbaec13ab51d1705771802977a8d787227751f589a' 
  AND token = 'uKmJ0ugkJEI+5hmjaM/lIIr3zhTlxX+lPieuYXn2ZPM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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