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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '130d1cc2221c6740bedba89181ee3d432c399ad6639467391a8e1b04ed2ffc11' 
  AND token = 'm+Wj/DvDPGLkTvTRWJHh7CRQwullXM0qymG2r+ldAUc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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