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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05f4e8da6f82da26e830f4b558014e1b4c2a99f8f023b76106b1f2ffbfeb9649' 
  AND token = 'bVurnLkMPyUumTuYlEqFsk7WL1FR2Kmqn4SBU8R7kNI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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