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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fc7ab300f2304e7eb3382f6d2571aeaa3cf255146575870231e509f5430ff88e' 
  AND token = '2q5F29+9o3/Pg/Cl1MOscAoAdp40fYa/E8h7fRWHymA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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