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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06fa13ad2bd404813b39a4850e9250101b7610020a33fec7096d51bec2e72c35' 
  AND token = 'XCK/kHlYZPWhYK51e9QWj3TkBLPUx10r5NZaL3cqKAs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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